Use DELETE Method in ASP.NET Core 3 Web API

On the Visual Studio, create new ASP.NET Core Web Application project

Input Project Name and select Project Location




Select Empty Template and click Create button to Finish

Structure of New Project




Open Startup.cs file and add new configurations as below:

using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;

namespace LearnASPNETCore3WebAPIWithRealApps
{
    public class Startup
    {
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddControllers();
        }

        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }

            app.UseRouting();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();
            });
        }
    }
}




Create new folder named Controllers. In this folder, create new controller named ProductController.cs as below:

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;

namespace LearnASPNETCore3WebAPIWithRealApps.Controllers
{
    [Route("api/product")]
    public class ProductController : Controller
    {

        [HttpDelete("delete/{id}")]
        public async Task<IActionResult> Delete(string id)
        {
            try
            {
                Debug.WriteLine("Id is deleted: " + id);
                return Ok();
            }
            catch
            {
                return BadRequest();
            }
        }

    }
}




Create Console App (.NET Framework) Project in Visual Studio.

ProductRestClientModel class contain methods call Web API. Add reference to System.Net.Http.Formatting library from Nuget Packages

using LearnASPNETCore3WebAPIWithRealApps_Client.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;

namespace LearnASPNETCore3WebAPIWithRealApps_Client
{
    public class ProductRestClientModel
    {
        private string BASE_URL = "http://localhost:18942/api/product/";

        public Task<HttpResponseMessage> Delete(string id)
        {
            try
            {
                HttpClient client = new HttpClient();
                client.BaseAddress = new Uri(BASE_URL);
                return client.DeleteAsync("delete/" + id);
            }
            catch
            {
                return null;
            }
        }
    }
}




using LearnASPNETCore3WebAPIWithRealApps_Client.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;

namespace LearnASPNETCore3WebAPIWithRealApps_Client
{
    class Program
    {
        static void Main(string[] args)
        {
            ProductRestClientModel productRestClientModel = new ProductRestClientModel();

            HttpResponseMessage httpResponseMessage = productRestClientModel.Delete("p01").Result;

            HttpStatusCode httpStatusCode = httpResponseMessage.StatusCode;
            Console.WriteLine("Status Code: " + httpStatusCode);

            bool isSuccessStatusCode = httpResponseMessage.IsSuccessStatusCode;
            Console.WriteLine("IsSuccessStatusCode: " + isSuccessStatusCode);

            Console.ReadLine();
        }
    }
}




Output from Client

Status Code: OK
IsSuccessStatusCode: True

Output from Server

Id is deleted: p01